CVE Explorer
CVE-2026-0809
Use of a custom token encoding algorithm in Streamsoft Prestiż software allows the value of the KSeF (Krajowy System e-Faktur) token to be guessed after analyzing how tokens with know values are encoded.
This issue was fixed in version 20.0.380.92.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"Streamsoft Prestiż","vendor":"Streamsoft","versions":[{"lessThan":"20.0.380.92","status":"affected","version":"12.2.363.17","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:0b9839ef64e9cfe81a71e2499ad3a67b893c477e16e35f7fec089462ac7ea25d · sha256:e778a04c0754f237… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:0b9839ef64e9cfe81a71e2499ad3a67b893c477e16e35f7fec089462ac7ea25d · sha256:e778a04c0754f237… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-261","description":"CWE-261 Weak Encoding for Password","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:0b9839ef64e9cfe81a71e2499ad3a67b893c477e16e35f7fec089462ac7ea25d · sha256:e778a04c0754f237… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"tags":["third-party-advisory"],"url":"https://cert.pl/posts/2026/03/CVE-2026-0809"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:0b9839ef64e9cfe81a71e2499ad3a67b893c477e16e35f7fec089462ac7ea25d · sha256:e778a04c0754f237… · /containers/cna/references/1
{"tags":["product"],"url":"https://www.streamsoft.pl/streamsoft-prestiz/"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:0b9839ef64e9cfe81a71e2499ad3a67b893c477e16e35f7fec089462ac7ea25d · sha256:e778a04c0754f237… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.